如何在JavaScript中合并两个for..of循环？

const arr1 = [1, 2, 3];
const arr2 = [4, 5, 6];
const mergedArray = [].concat(arr1, arr2);

for (const element of mergedArray) {
  console.log(element);
}

const arr1 = [1, 2, 3];
const arr2 = [4, 5, 6];
const mergedArray = [...arr1, ...arr2];

for (const element of mergedArray) {
  console.log(element);
}

const arr1 = [1, 2, 3];
const arr2 = [4, 5, 6];
const tempArray = [];

for (const element of arr1) {
  tempArray.push(element);
}

for (const element of arr2) {
  tempArray.push(element);
}

const mergedArray = Array.from(tempArray);

for (const element of mergedArray) {
  console.log(element);
}